231739201 has 2 divisors, whose sum is σ = 231739202. Its totient is φ = 231739200.

The previous prime is 231739159. The next prime is 231739231. The reversal of 231739201 is 102937132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135699201 + 96040000 = 11649^2 + 9800^2 .

It is a cyclic number.

It is not a de Polignac number, because 231739201 - 2²⁵ = 198184769 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231739201.

It is not a weakly prime, because it can be changed into another prime (231739231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115869600 + 115869601.

It is an arithmetic number, because the mean of its divisors is an integer number (115869601).

Almost surely, 2^231739201 is an apocalyptic number.

It is an amenable number.

231739201 is a deficient number, since it is larger than the sum of its proper divisors (1).

231739201 is an equidigital number, since it uses as much as digits as its factorization.

231739201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 231739201 is about 15222.9826578105. The cubic root of 231739201 is about 614.2330324982.

The spelling of 231739201 in words is "two hundred thirty-one million, seven hundred thirty-nine thousand, two hundred one".